Compression-coupling for shafts.



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1,037,682, Patented Sept. 3, 1912.

UNITED STATES PATENT OFFICE.

CHARLES W. STREEPER, OF MANI-IEIM, PENNSYLVANIA, ASSIG'NOR TO BOND FOUNDRY & MACHINE COMPANY, 0F PHILADELPHIA, PENNSYLVANIA. A CORPORATION OF PENNSYLVANIA.

COMPRESSION-COUPLING FOR SI-IAF'IS.

To all whom it may concern:

Be it known that I, CHARLES IV. STREEPER, a citizen of the United States, residing in Manheim, Lancaster county, Pennsylvania, have invented certain Improvements in Compression-Couplings for Shafts, of which the following is a specification.

My invention relates to that class of compression couplings for shafts in which the meeting ends of the shafts to be coupled are surrounded by a reversely-tapered compression sleeve, the latter being acted upon by two compression rings 'internally tapered to correspond with the external tapers of the compression sleeve, whereby, when these rings are drawn toward each other, the compression sleeve will be contracted upon the shafts. y

My invention relates especially to the construction of the compression rings and to the means for drawing the same toward each other on the compression sleeve, the purpose of my invention being to insure the application of substantially uniform pressure to all parts of the sleeve upon which the compression rings have their bearing. This object I attain in the manner hereinafter set forth, reference being had to the accompanying drawing, in which- Figure l is a view, partly in side elevation and partly in vert-ical longitudinal section, of a compression coupling constructed in accordance with my invention, and Fig. 2 is a transverse section on the line n-a, Fig. l.

In the drawing, 1, la represent the adjoining end portions of two shafts which are to be coupled together, and 2 is a compression sleeve fit-ted upon the ends of said shafts and gradually reduced in diameter from the center toward each end so as to present reversely beveled or tapered external faces. This sleeve may be constructed in any desirable way in order to admit of compression upon the shafts. In the present inst-ance it is provided for this purpose with a spiral slot in the manner set forth in the Letters Patent of R. W. Scott, No. 707,453, dated August 19, 1902.

Mounted upon arid iitting snugly to one beveled face of the sleeve 2 is a ring 3 and mounted in a similar manner upon the opposite beveled face of the sleeve is a like ring 4, consequently when these rings are moved Specification of Letters Patent.

Application led August 10, 1909.

Patented Sept. 3,1912.

Serial No. 512,182.

toward each other the sleeve 2 will be compressed upon the ends of the shafts and will couple the same together by reason of its frictional hold thereon, and when the rings 3 and t are moved apart from each other pressure upon the sleeve 2 will be relieved and the frictional hold of the sleeve upon the ends of the shafts will be lessened so as to permit said shafts to turn independently of each other or t-o be removed from the sleeve, as desired. Each of the rings 3 and 4 has, at its inner end, an annular flange 5 and at its outer end a similar annular iange 6, whereby said rings are rendered so stift' and rigid that spring of any part of the ring is effectually prevented, and the full wedging effect of the ring upon the compression sleeve is insured when said ring is moved inwardly upon the sleeve. The inner flanges 5 of the rings are perforated for the passage of a series of bolts 7 equidistantly disposed around the ring, as shown in Fig. 2, and each provided with a head and nut as sho-'wn in Fig. l. Both the inner and outer flanges of t-he rings are perforated for the passage of a series of bolts 9, these bolts being likewise provided with heads and nuts and being alternated with the bolts 7, as shown in Fig. 2. By tightening the nuts upon the bolts 7 and 9 therefore pressure will be applied to each end of each ring, in order to force said rings inwardly upon the tapering ends of the compression sleeve, the presence of the bolts at each end of each ring further tending to increase the rigidity of said rings and prevent springing of the outer port-ions of the rings under the radial thrust to which they are subjected.

In order to shield and protect the heads and nuts of the bolts 7 and 9 and prevent contact of the same with the person or clothing of any one in the vicinity of the coupling the heads and nuts of the bolts 7 are contained in recesses 10 formed in the faces of the flanges 5 of the rings, and the heads and nuts of the bolts 9 are contained in recesses 11 formed in the faces of the flanges 6 of said rings, as shown in Fig. l.

I claim:

The combination, in a compression coupling for shaft sections, of a reversely tapered and longitudinally slotted compression sleeve, compression rings applied to the tapered portions of the sleeve and each having, at each end, a projecting Harige, bolts name to this specification, in the presence of connecting the inner flanges of the rings to tWo subscribing Witnesses.

resist separation of the rings, and other bolts CHARLES 7 STRFFPER Connecting the outer flanges of Said rings to "J J Compress said tapered compression sleeve at VVitnesSes: the outer ends thereof. HAMILTON D. TURNER,

In testimony whereof, I have signed my KATE A. BEADLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents, Washington, D. C. 

